Bitcoin Hackathon (event), 13-15 July, IN-Berlin, Berlin

[kangasbros]

The Hackathon is over, thanks for everyone who participated in any way! Results etc below.

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We previously had one Hackathon in Finland, and it was a success. Now we will have another in Berlin. Welcome!

Hackathon - people gather together at one place, hacking, programming, brainstorming, developing and launching a product in one weekend!

Meet other skillful technologists. Form teams. Share ideas. Execute.

Gain fame & prizes by winning the competition.

http://bitcoin-hackathon.com/index.php/Main_Page

Facebook event: https://www.facebook.com/events/320236274729013/

Just turn up!

Edit: and any ideas are welcome: just send me a message. Also if you want to sponsor the event in some way, contact me (for example, if you have a business you want to promote or something).

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[kangasbros]

Are you interested in promoting your company/product/web site to the hackers and other participants? You can sponsor the event!

We have 4 different sponsoring tiers:

Tier 0 - Your logo on the web site - 10 BTC or equivalent competition prize
Tier 1 - Your logo on the web site and also on the event - 20 BTC or equivalent competition prize
Tier 1.5 - A leaflet or other promotional material given away in the goody bag for participants - 30 BTC or equivalent competition prize
Tier 2 - Promotion of your company/product alongside the event - for example, the best project which utilizes your API gains a special prize - 60 BTC or equivalent competition prize

http://bitcoin-hackathon.com/index.php/Sponsoring

[kangasbros]

LocalBitcoins.com will be sponsoring the hackathon, so we will have at least free refreshments and some snack/food Maybe also the contest winner names will be forged in the block chain for eternity!

Also if you have any project ideas etc., you can discuss it here. I have been toying with an idea of a open source bitmit-style marketplace, so people can easily start their own bitcoin-based marketplaces. It would be a web app using django_bitcoin library. However I'm still pretty open about what I'm gonna do, if somebody wants to team up with me, just send me a msg. I can do python, django, iPhone dev, also php and even .NET (although I'm not very happy doing those)

[genjix]

Attending:

* jeremias (kangasbros - django-bitcoin)
* genjix
* yossarian
* Andreas Schildbach (Bitcoin for Android)
* Joerg Platzer (room77)
* Andreas Petersson (bitcoin-austria), alias yellowhat
* Stefan Thomas (WeUseCoins, BitcoinJS)
* Mike Hearn (BitcoinJava)

[kangasbros]

Added a little details about my idea: http://bitcoin-hackathon.com/index.php/Marketplace

Currently we have about 15 confirmed attendees coming. I hope the weekend will be a success

[kangasbros]

Also remote attendance is possible. We will set up google hangout, starting at 16:00 German time today. Link will be available at google plus event page: https://plus.google.com/events/ce24slldsj4auqc0jpkjn4to7b0/114922074876942161680

[apetersson]

i am now getting the media files together from the bitcoin hackathon. if anyone has pictures/video please tell me, and maybe share them with me so i can add them to the footage.

[apetersson]

http://www.youtube.com/watch?v=EQ2rb4pHH1g

go watch it - or at least the start it is quite nice.

[kiba]

Did genjix attended?

[lonelyminer (Peter Šurda)]

Yea he is on the video.

[beckspace]

Did genjix attended?

Busy month for genjix. He's scheduled for FSIL 12 in Porto Alegre - Brazil.

http://fisl.org.br/13/papers_ng/public/fast_grid?event_id=3

http://softwarelivre.org/fisl12

[kangasbros]

The Hackathon is over, thanks for all the participants and sponsors! I had loads of fun, and there were lots of great ideas flying around!

Thanks especially to:

- IN-Berlin, for providing the space to hold the hackathon!
- Sponsors: bitstamp.net, bitcoin2012.com and localbitcoins.com
- Room77 (the restaurant at the end of capitalism), for hosting the afterparty and the burgers & pampero
- For marketing and promotion: genjix
- Jury: yossarian + other people who attended the presentations

The results - winner first

1. Offline transactions for BitcoinJ/Android bitcoin wallet: Andreas Schildbach and grazcoin
- Ability for Android Wallet to do offline transactions
2. Bitcoin Pong: genjix
- Multiplayer pong, where you can win (or lose) bitcoins
3. acceptbit.com: Jeremias Kangas and Stefan Thomas
- an ultra-safe merchant tool, where you can accept payments without sharing your private keys
4. BitcoinJ Multisig: yellowhat and PK
- way to do multisig transactions for BitcoinJ/Android
5. Double-spend monitor: genjix
- tool to monitor double spends
6. Bitcoin-autosave: Mike Hearn
- BitcoinJ improvements (Mike did also loads of other stuff, and helped with winner project too)
7. Live-calculator: genjix
- Tool for btc accepting restaurants
8. Bitcoin mages: genjix
- Strategy game, where you play for bitcoins
9. Embed block message: genjix
- simple tool for embedding messages in block chain

I probably didn't remember everything, so if you think there is a mistake (eg. team members), message me!

Source code

genjix: https://gitorious.org/bitcoin-hackathon
acceptbit.com: https://github.com/kangasbros/electrumpos
Bitcoin Wallet: https://github.com/livne/Bitcoin-Wallet-for-Android (branch hackathon)

Other

Participants, if you see any errors in the list above, msg me! Also send me your bitcoin addresses please

Video from the event: http://www.youtube.com/watch?v=EQ2rb4pHH1g&feature=youtu.be

The next hackathon will be organized before bitcoin london conference, Wed 12th and Thur 13th september, london.

[2weiX]

interested in oscommerce module for acceptbit

[Phinnaeus Gage]

Did genjix attended?

Busy month for genjix. He's scheduled for FSIL 12 in Porto Alegre - Brazil.

http://fisl.org.br/13/papers_ng/public/fast_grid?event_id=3

http://softwarelivre.org/fisl12

Hence owner an outdated computer?

9. Embed block message: genjix
- simple tool for embedding messages in block chain

In binary?

[cbeast]

Can't wait to see this.

4. BitcoinJ Multisig: yellowhat and PK
- way to do multisig transactions for BitcoinJ/Android

[Jouke]

Can't wait to see this.

1. Offline transactions for BitcoinJ/Android bitcoin wallet: Andreas Schildbach and grazcoin
- Ability for Android Wallet to do offline transactions

[Mike Hearn]

Offline transactions means, if the buyer is offline they can send the transaction via Bluetooth to the seller. The user experience is (when it works) invisible - the MAC address of the sellers Bluetooth adapter is included in the QRcode and then the client can connect to it when sending coins without peering or discovery. The receiving side can then put the tx on the network and see if it comes back, thus checking its validity.

We're also looking at maybe letting the receiving side keep the transaction around in the wallet so if both parties are offline but trust each other, they'll broadcast it later when they have internet access.

We got pretty far, though the demo we tried to do was too flaky to really work. Once some bugs are fixed and a bit more code is written it should work pretty well, and the system can be a subject for potential BIP standardization.

[giszmo]

Offline transactions means, if the buyer is offline they can send the transaction via Bluetooth to the seller. The user experience is (when it works) invisible - the MAC address of the sellers Bluetooth adapter is included in the QRcode and then the client can connect to it when sending coins without peering or discovery. The receiving side can then put the tx on the network and see if it comes back, thus checking its validity.

We're also looking at maybe letting the receiving side keep the transaction around in the wallet so if both parties are offline but trust each other, they'll broadcast it later when they have internet access.

We got pretty far, though the demo we tried to do was too flaky to really work. Once some bugs are fixed and a bit more code is written it should work pretty well, and the system can be a subject for potential BIP standardization.

Kudos! I'm all for that (or a slightly more general) standard! That would really reduce those connectivity issues and it should work for Spinner and other apps where signing happens on the phone as well